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The Intellectual Property Strategist | Blocking Ex Parte Reexamination At the Threshold: Using the New USPTO’s Procedures to a Patent Owner’s Advantage

July 2026 – The Intellectual Property Strategist
Portrait of Fabian M. Koenigbauer

With institution rates in post-grant proceedings falling to 37% for the current fiscal year, patent challengers increasingly turned to ex parte reexaminations to challenge patents. While ex parte reexaminations do not provide the benefits of adversarial post-grant proceedings, they have been ordered about 92.7% of the time and historically favor third-party requestors with only 16% of patent claims surviving unchanged. See, “Ex Parte Reexamination Filing Data – September 30, 2025,” USPTO. Historically, these proceedings were procedurally lopsided in favor of third-party requesters because patent owners could not respond until after reexamination was ordered. New USPTO procedures allow patent owners to respond to the request pre-reexamination. Patent owners should consider strategically leveraging these procedures to prevent their patent claims from being cancelled or narrowed through reexamination.

Read the full article written by Fabian Koenigbauer and published in The Intellectual Property Strategist. Login may be required.

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